Parab, T., Singh, A., Alashi, N., Modak, N., Singh, A.P., Bhave, M., Nagarale, S. and Lyngdoh, S. (2025), What Defines the Groupwise Compositional Turnover of Eurasian Phylloscopus Warblers? Insights From Zeta (ζ) Diversity and MS-GDM. J Biogeogr, 52: 657-669. https://doi.org/10.1111/jbi.15060.
In the published article, the second affiliation of the first author, Tushar Parab, was incorrectly listed as follows:
Academy of Scientific and Innovative Research (AcSIR), New Delhi, India
The correct affiliation, as required by the doctoral institution, should be as follows:
Academy of Scientific and Innovative Research (AcSIR), Ghaziabad – 201002, India
Additionally, this affiliation should also be included as the second affiliation of the corresponding author, Salvador Lyngdoh, which is currently missing in the published version.
We apologize for this error.
We reconstructed the biogeographical history of a species-rich legume genus by testing alternative hypotheses on the origin and expansion of neotropical open-vegetation areas, with particular emphasis on the campos rupestres.
Neotropics.
Chamaecrista (Leguminosae), one of the most speciose genera of the neotropical region.
We reconstructed a fossil-calibrated phylogeny of Chamaecrista species and built a comprehensive database of species occurrences. We fitted and compared nine biogeographic models that differed in area availability and dispersal rates across time frames. These time frames were defined based on major climatic processes that have influenced neotropical open-vegetation areas.
Under the best-fitting biogeographical model, Chamaecrista originated in the Amazon during the Mid Eocene. A single ancestral Chamaecrista lineage colonised the campos rupestres before the Late Oligocene–Mid Miocene, when climatic shifts presumably expanded lowland open-vegetation areas in the Neotropics. Most diversification of Chamaecrista species occurred in the campos rupestres from the Late Miocene to the Quaternary. Multiple ancestral Chamaecrista lineages dispersed from the campos rupestres to the Cerrado from the Mid Miocene onwards, while few lineages dispersed into the Caatinga during the same period. We propose that the campos rupestres might have functioned as a montane reservoir of plant diversity, harbouring lineages that later dispersed into adjacent lowland areas.
Recently in this journal, Siqueira-Silva and colleagues forecast the effects of climate change on the vegetation of Chimborazo in the future (2070) based on species distribution models for 134 species ‘native of Chimborazo’ and predicted future trends consistent with past observed upslope shifts since von Humboldt and Bonpland's expedition in 1802. The 134 species come from 15 transects at 3800–5200 m on one side of the mountain made in 2012, with the hope that the combined ‘vegetation surveys on Mt. Chimborazo in 1802 and 2012 offer valuable information on plant assemblages through observational data.’ Humboldt's detailed account of his ascent of the Chimborazo, however, makes clear that his team was unable to collect plants due to inclement weather, and indeed of Humboldt's 156 total Andean collections, only eight come from the Chimborazo's lower slopes. The seemingly unstoppable myth of a supposed 1802 vegetation survey on Mt. Chimborazo is a disservice to biogeography and continues to procreate alternative facts.
Turtles are widely distributed across continental freshwater systems in the Western Palearctic and Nearctic regions. Nevertheless, the two regions differ markedly in species richness, with 55 species in the Nearctic assemblage and only seven in the Western Palearctic. This study investigated the interplay between environmental filters (hydrological, climatic, and landscape factors), species traits, and species phylogenetic relatedness in shaping the spatial patterns of Holarctic freshwater turtles.
Western Palearctic and Nearctic.
Present day.
Freshwater turtles (order Testudines).
Locality data for 62 turtle species were collected from open-access databases. Distance-based redundancy analysis was conducted to assess the influence of environmental, species trait, and phylogenetic components on species spatial distribution matrices.
In the Western Palearctic and Nearctic regions, climate and landscape variables were highly associated with the spatial patterns, with these relationships being stronger in the Nearctic than in the Western Palearctic. In both regions, phylogenetic relatedness was also correlated with the structuring of species distributions, although this association appeared more marked in the Western Palearctic. Hydrological factors and species traits showed only weak relationships with the spatial configuration.
The Western Palearctic and Nearctic regions differ significantly in the richness of their freshwater turtle assemblages. In the Nearctic, the spatial relationships among species show stronger associations with environmental conditions than in the Western Palearctic. This pattern is consistent with a high diversity of assemblages composed of closely related species that exhibit fine-scale turnover along environmental gradients.
Amid ongoing and accelerating global change, predicting the ecological consequences of future species loss is important for prioritising conservation actions to protect biodiversity. Species richness has long been thought to protect communities from species loss by providing ecological redundancy, whereby the loss of any one species hardly impacts the integrity of the wider community due to overlap in species' ecological roles. However, the extent to which species richness will buffer the impacts of future species loss remains unclear due to concurrent variation in both the distribution and ecological roles of species likely to be lost.
Canada.
Terrestrial vertebrates.
To understand how future species loss threatens ecosystems and whether species richness mitigates this threat, we simulated the loss of imperilled taxa from Canadian ecosystems across spatial scales and measured the extent to which community functional and interaction (predator–prey) diversity, two important components of ecosystem integrity, declined.
We report that, despite harbouring far fewer species at risk, northern ecosystems are disproportionately vulnerable, whereby the loss of imperilled taxa could result in up to 25% and 20% declines in functional and interaction diversity, respectively. Surprisingly, despite high species richness, some southern ecosystems containing high numbers of imperilled taxa were also vulnerable, indicating that richness alone is likely insufficient at predicting community vulnerability to species loss.
Together, these findings demonstrate the need to account for future species loss when evaluating the vulnerability of Earth's ecosystems and highlight the importance of conserving species at risk, specifically in northern communities where they potentially play outsized roles in structuring and maintaining the integrity of ecosystems.
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